This custom sauna was built for a private residence on Koh Samui, installed inside an existing room that opens to an unobstructed ocean view. The compact footprint — 2200 × 1600 mm — made the most of the available space without sacrificing the feeling of a proper sauna.

The interior is lined throughout in teak, chosen for both its natural resilience in Koh Samui's humid, coastal climate and its warm, rich tone. A small L-shaped bench was configured to fit the room precisely, giving bathers a comfortable reclining position while keeping the layout uncluttered.

Heat is provided by a 9 kW sauna heater with Wi-Fi controls, so the sauna can be brought up to temperature from a phone before the owner even steps inside. For a home on a tropical island, that kind of convenience matters.

If you'd like to plan something similar for your own property on Koh Samui or anywhere else in Thailand, try the free 3D sauna designer at sisusauna.app — or reach out via WhatsApp to talk through the details.